Adai (Adahi, Adaes, Atayo)

Adai is an extinct language of Louisiana. The small Adai tribe moved west to join the
Caddo tribe in the late 1700's, and
their language is known only from a vocabulary list recorded in 1804. Some people have suggested the
Adai language may have been distantly related to the
Caddoan languages, but this has not
been conclusively shown.
Other common spellings of their name include Adahi, Adaes, Atayo, Atay, Aday, Adaise,
Adees, Adee, Addee, Addies, Andaye, Adage, and Hadai. This was the Caddo name for their tribe, meaning "brush wood people." Their original
tribal name for themselves was evidently never recorded.